<template>
  <div>
    <h1>{{msg}}</h1>
    <button @click="btn">翻转世界</button>
  </div>
</template>
  
<script>
export default {
  data () {
    return {
      msg:"Hello,World"
    }
  },
   methods: {
     btn(){
       this.msg = this.msg.split("").reverse().join("")
     }
   }
}
</script>

<style>

</style>